Fig. 2.

Total number of infections (final size of the outbreak) caused by both sensitive and resistant strains as a function of the treatment level $(p)$, for different reproduction numbers of the sensitive strain. ($R_0^s$: black solid line, 1.4; black dashed line, 1.8; black dotted line, 2.2; black dot–dashed line, 2.4; grey solid line, 3). Transmission rate $\beta$ is computed for each value of $R_0^s$, and baseline values of other parameters are given in Table 2.